* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none; /* 默认所有元素不可选中 */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 允许输入框、文本区域等可编辑元素选中文本 */
input,
textarea,
[contenteditable="true"],
[contenteditable="true"] * {
  user-select: text !important;
  -webkit-user-select: text !important;
  -moz-user-select: text !important;
  -ms-user-select: text !important;
}

.App {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}
